OAuth Device Code Phishing Campaigns Surge Targets Microsoft 365
A surge in phishing attacks exploiting Microsoft’s OAuth device code flow has been identified by Proofpoint
Phishing uses deceptive messages to steal credentials or deliver malware, while user verification, MFA, and email filtering reduce the risk.
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Background for this topic.
Phishing is deceptive communication—by email, text, phone, or a fake website—that impersonates a trusted person or service to make someone disclose credentials, approve a transaction, reveal sensitive information, or run harmful software. Attackers use it to bypass technical controls by persuading a legitimate user to perform an action, and may target employees, customers, administrators, or suppliers.
Its impact can include account takeover, unauthorized payments, exposure of personal or business data, and access to internal systems. The most effective control for stolen-password phishing is phishing-resistant multi-factor authentication, such as hardware-backed passkeys or security keys, which binds authentication to the legitimate site. Organizations should also filter and authenticate messaging where possible, use password managers, restrict risky actions, train users to verify unusual requests through a separate channel, and provide rapid reporting so suspected credentials or sessions can be revoked.
A surge in phishing attacks exploiting Microsoft’s OAuth device code flow has been identified by Proofpoint
Check Point has detected thousands of phishing emails in the past fortnight, offering fake promotions and special deals
A new phishing campaign has been identified, delivering the Phantom information-stealing malware via an ISO attachment